Used to describe something that is so wonderful and beautiful that one cannot think of any other word to describe it. Beautiful/wonderful beyond words or comprehension. Words only attempt to describe the beauty or wonder of the thing one is trying to describe.

"Mooshlovely" is originally from a book called "The Mirror of Merlin" by T.A. Barron. In this book, a creature, called a ballymag, uses the word MOOSHLOVELY to describe his home, which is a beautiful crystal cave that, according to the characters in the book, is "like a womb." (91) But even "womb" doesn't describe the ballymags' home. Finally, Merlin and his friend decide that it's just one of those things that can't be explained in a single word. The ballymag proves them both wrong and gives them the perfect word: mooshlovely.

'Young Merlin:It's so lush, so verdant, so rich in here. Like a garden. No, no, more like...a womb.